Walnuts are the drupes of the genus Juglans.
In 2014, the total production of walnuts (including shells) in the world was 3.46 million metric tons, of which the People's Republic of China accounted for 46%, and the other major producers were the United States, Iran, Turkey and Mexico.
The average walnut yield per hectare in the world in 2014 was 3.5 metric tons per hectare. Eastern Europe yields the most per hectare, with Slovenia and Romania producing 19 metric tons per hectare.
The largest exporter of walnuts in 2014 was the United States, followed by Turkey. 99% of American walnuts are grown in California's Central Valley.
store
Inside of a Growing Walnut
Like other nuts, walnuts need to be handled and stored carefully. If they are not stored properly, walnuts will be prone to insects, and there may also be molds, which can produce carcinogenic aflatoxins. Therefore, if the walnuts are moldy, all the walnuts shipped in the same batch need to be thrown away. If the walnuts are to be stored for a long time, the ideal temperature for industrial and domestic storage is −3 to 0 °C (27 to 32 °F) and low humidity. However, in some developing countries where walnuts are produced in large quantities, freezing technology is not widely used. If the storage temperature is higher than 30 °C (86 °F) and the humidity exceeds 70%, a large number of walnuts will be damaged and cannot be eaten. If the humidity exceeds 75%, mold may appear and release aflatoxin.
food
Walnuts are divided into shelled and unshelled ones when they are sold. The walnut flesh may be half the size of the whole flesh, or become smaller pieces of walnuts due to collisions during use, and walnuts may be made into candy. or an ingredient in other foods. Pickled walnuts that are cured with whole walnut nuts can be sweet or salty, depending on how they are cured. There are unprocessed walnuts on the market, as well as roasted walnuts. Walnuts can be one of the many nuts in muesli and can be added to other dishes. For example, walnut paste and walnut pie are based on walnuts. Walnuts are often added to cakes.
Walnuts are also one of the main ingredients of Fesenjan in the Iranian diet. Walnuts are also commonly found in brownie recipes, as an ice cream topping, and walnuts are also commonly used on some dishes. Nocino is a liqueur made from unripe green walnuts soaked in alcohol and syrup.
Walnut oil is available in the market and is often used in salad dressings. Because of its low smoke point, it cannot be used for frying.
